var { Actions } = require('flummox');
var Promise = require('bluebird');
var assign = require('object-assign');

class SessionActions extends Actions {
	constructor(api, flux) {
		super();
		this.api = api;
		this.flux = flux;
	}

	fetchSession(username, password) {
		return this.api.auth.login(username, password).then(res => res.body);
	}
	
	login(username, password) {
		var fetchSession = this.fetchSession(username, password);
		var fetchUser = fetchSession.then(res => {
			// Normally you wouldn't have to worry about the access token but it is not set on
			// the api client until both fetchSession and fetchUser resolve.
			
			this.receiveSession(res.access_token, res.user_id);
			return this.flux.getActions('core.users').fetchUser(res.user_id);
		});
		
		return Promise.join(
			fetchSession,
			fetchUser,
			(session, user) => assign({}, session, { user }));
	}
	
	logout() {
		// No payload.
		return true;
	}
	
	receiveSession(accessToken, userId) {
		return { accessToken, userId };
	}
}

module.exports = SessionActions;